定语从句中 in which怎么用啊（好像是什么句尾in提前）求具体用法

in which是定语从句中的介词加上关系代词引导的定语从句.只有这种从句才有此形式.它的来源有以下几种情况.
第一种.用in which来代替一个关系副词when.如
I will never forget the days when(=in which) we worked together.

第二种 介词in来代替关系副词where
This is the city where(=in which) Tom was born.
第三种 动词短语以介词in结尾变为定语从句可把介词放在关系代词which之前。如
This is the city where(=in which) he lived ten years ago.这个句子还可写成
This is the city which he lived in ten years ago.
第四种。the way做先行词时在从句中做状语。可用此形式，也可写成that或省略。如
I don't like the way (in which/that)you speak to me.

in which位于先行词后用来代替关系副词when where

in which是定语从句中的介词加上关系代词引导的定语从句.只有这种从句才有此形式.它的来源有以下几种情况.
第一种.用in which来代替一个关系副词when.如
I will never forget the days when(=in which) we worked together.
第二种 介词in来代替关系副词where
This is the city where(=in which) Tom was born.
第三种 动词短语以介词in结尾变为定语从句可把介词放在关系代词which之前。如
This is the city where(=in which) he lived ten years ago.这个句子还可写成
This is the city which he lived in ten years ago.
第四种。the way做先行词时在从句中做状语。可用此形式，也可写成that或省略。如
I don't like the way (in which/that)you speak to me.定语从句里词组 in which
的主要用法是代替“关系代词” (relative pronouns) where
例：
He lives in a village where all the houses have windmills.
He lives in a village in which all the houses have windmills.
他住在一个所有的房子都有风车的乡村里。
你说的 “句尾 in 提前” 是指这个例句：
This is the bedroom which Norman Bethune slept in.
上面句子和这句意思一样：
This is the bedroom in which Norman Bethune slept.
这是白求恩睡过的卧室。
in which 的另一个用法是表达 “哪个之中” 的意思：
In which famous book do you find the expression “tomorrow is another day”?
在哪本著名的书中可以找到“明天又是新的一天的开始”这句话？

in which是介词加关系代词。in which有两种用法：一是替换关系副词where，一是替换指代the way的关系副词that。如：This is the house in which I grew up.（in which I grew up是定语从句）The way that/ in which she looks at you is strange. 她看你的方式怪怪的。（that/ in which she looks at you 是定语从句）

定语从句里词组 in which的主要用法是代替“关系代词” (relative pronouns) where例：He lives in a village where all the houses have windmills.He lives in a village in which all the houses have windmills....